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/*
* IPMI ACPI firmware handling
*
* Copyright (c) 2015,2016 Corey Minyard, MontaVista Software, LLC
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "hw/ipmi/ipmi.h"
#include "hw/acpi/aml-build.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/ipmi.h"
static Aml *aml_ipmi_crs(IPMIFwInfo *info)
{
Aml *crs = aml_resource_template();
/*
* The base address is fixed and cannot change. That may be different
* if someone does PCI, but we aren't there yet.
*/
switch (info->memspace) {
case IPMI_MEMSPACE_IO:
aml_append(crs, aml_io(AML_DECODE16, info->base_address,
info->base_address + info->register_length - 1,
info->register_spacing, info->register_length));
break;
case IPMI_MEMSPACE_MEM32:
aml_append(crs,
aml_dword_memory(AML_POS_DECODE,
AML_MIN_FIXED, AML_MAX_FIXED,
AML_NON_CACHEABLE, AML_READ_WRITE,
0xffffffff,
info->base_address,
info->base_address + info->register_length - 1,
info->register_spacing, info->register_length));
break;
case IPMI_MEMSPACE_MEM64:
aml_append(crs,
aml_qword_memory(AML_POS_DECODE,
AML_MIN_FIXED, AML_MAX_FIXED,
AML_NON_CACHEABLE, AML_READ_WRITE,
0xffffffffffffffffULL,
info->base_address,
info->base_address + info->register_length - 1,
info->register_spacing, info->register_length));
break;
case IPMI_MEMSPACE_SMBUS:
aml_append(crs, aml_i2c_serial_bus_device(info->base_address,
"^"));
break;
default:
abort();
}
if (info->interrupt_number) {
aml_append(crs, aml_irq_no_flags(info->interrupt_number));
}
return crs;
}
void build_ipmi_dev_aml(AcpiDevAmlIf *adev, Aml *scope)
{
Aml *dev;
IPMIFwInfo info = {};
IPMIInterface *ii = IPMI_INTERFACE(adev);
IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
uint16_t version;
iic->get_fwinfo(ii, &info);
assert(info.ipmi_spec_minor_revision <= 15);
version = ((info.ipmi_spec_major_revision << 8)
| (info.ipmi_spec_minor_revision << 4));
dev = aml_device("MI%d", info.uuid);
aml_append(dev, aml_name_decl("_HID", aml_eisaid("IPI0001")));
aml_append(dev, aml_name_decl("_STR", aml_string("ipmi_%s",
info.interface_name)));
aml_append(dev, aml_name_decl("_UID", aml_int(info.uuid)));
aml_append(dev, aml_name_decl("_CRS", aml_ipmi_crs(&info)));
aml_append(dev, aml_name_decl("_IFT", aml_int(info.interface_type)));
aml_append(dev, aml_name_decl("_SRV", aml_int(version)));
aml_append(scope, dev);
}
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